KECK OBSERVATORY CALENDAR FOR 2015 -NAUTICAL (computed for altitude 4160.0 m) NAUTICAL(12 deg) TWILIGHT/DAWN MOON(midnight) DATE(HST) SUN TWILIGHT ENDS MOON MOON DAWN BEGINS SUN SIDEREAL TIMES NIGHT (12 deg) Zenith 2015 SET RISE SET RISE TWI MID DAWN LENGTH DARK___ RA DEC Dist 12 18 18 12 12 12 h h % h m d m deg WED APR 01 18 46 19 24 19 50 16 31 05 20 05 02 05 28 06 06 07 43 12 20 17 49 10.1 0.1 1 1118 0208 23 THU APR 02 18 46 19 24 19 50 17 19 05 57 05 01 05 27 06 05 07 47 12 24 17 52 10.1 0.0 0 1204-0138 22 FRI APR 03 18 47 19 24 19 51 18 08 06 34 05 00 05 26 06 04 07 51 12 28 17 55 10.0 0.0 0 1250-0523 26 SAT APR 04 18 47 19 25 19 51 18 57 04 59 05 25 06 03 07 56 12 32 17 58 10.0 0.0 0 1337-0857 33 SUN APR 05 18 47 19 25 19 51 19 47 04 58 05 24 06 02 08 00 12 36 18 00 10.0 0.4 3 1426-1212 42 MON APR 06 18 47 19 25 19 52 20 38 04 57 05 23 06 01 08 04 12 40 18 03 10.0 1.2 12 1516-1457 52 TUE APR 07 18 48 19 26 19 52 21 31 04 56 05 22 06 00 08 09 12 43 18 06 9.9 2.1 20 1608-1702 62 WED APR 08 18 48 19 26 19 52 22 24 04 55 05 21 06 00 08 13 12 47 18 09 9.9 3.0 29 1702-1819 73 THU APR 09 18 48 19 26 19 53 23 18 04 54 05 20 05 59 08 17 12 51 18 12 9.9 3.9 39 1757-1834 84 FRI APR 10 18 48 19 27 19 53 00 11 04 53 05 20 05 58 08 22 12 55 18 16 9.9 4.7 47 1853-1757 >90 SAT APR 11 18 49 19 27 19 53 01 03 04 52 05 19 05 57 08 25 12 59 18 19 9.9 5.6 56 1950-1617 >90 SUN APR 12 18 49 19 27 19 54 01 53 04 51 05 18 05 56 08 29 13 03 18 22 9.8 6.4 65 2046-1339 >90 MON APR 13 18 49 19 28 19 54 02 42 14 03 04 50 05 17 05 55 08 34 13 07 18 25 9.8 7.2 73 2142-1012 >90 TUE APR 14 18 50 19 28 19 55 03 30 15 03 04 50 05 16 05 55 08 38 13 11 18 28 9.8 8.0 81 2238-0607 >90 WED APR 15 18 50 19 29 19 55 04 18 16 05 04 49 05 15 05 54 08 43 13 15 18 31 9.8 8.8 90 2334-0137 >90 THU APR 16 18 50 19 29 19 56 05 06 17 07 04 48 05 14 05 53 08 47 13 19 18 34 9.7 9.6 98 0030 0258 >90 FRI APR 17 18 51 19 29 19 56 05 54 18 09 04 47 05 14 05 52 08 51 13 23 18 38 9.7 9.7 100 0126 0721 >90 SAT APR 18 18 51 19 30 19 56 06 44 19 12 04 46 05 13 05 51 08 56 13 27 18 41 9.7 9.7 100 0223 1114 >90 SUN APR 19 18 51 19 30 19 57 20 14 04 45 05 12 05 51 09 00 13 31 18 44 9.7 9.0 92 0321 1420 >90 MON APR 20 18 52 19 30 19 57 21 14 04 44 05 11 05 50 09 04 13 35 18 47 9.7 7.9 82 0418 1630 >90 TUE APR 21 18 52 19 31 19 58 22 11 04 43 05 10 05 49 09 09 13 39 18 50 9.7 7.0 72 0514 1739 >90 WED APR 22 18 52 19 31 19 58 23 05 04 42 05 09 05 49 09 13 13 43 18 52 9.6 6.1 62 0609 1747 >90 THU APR 23 18 53 19 32 19 59 23 55 04 42 05 09 05 48 09 18 13 47 18 56 9.6 5.2 54 0703 1658 >90 FRI APR 24 18 53 19 32 19 59 00 41 04 41 05 08 05 47 09 22 13 50 18 59 9.6 4.4 46 0754 1516 84 SAT APR 25 18 53 19 32 20 00 01 24 04 40 05 07 05 46 09 26 13 54 19 02 9.6 3.7 38 0844 1258 74 SUN APR 26 18 54 19 33 20 00 02 04 04 39 05 06 05 46 09 31 13 58 19 05 9.6 3.0 31 0931 1006 65 MON APR 27 18 54 19 33 20 01 02 42 04 38 05 06 05 45 09 35 14 02 19 09 9.6 2.4 25 1018 0649 56 TUE APR 28 18 54 19 34 20 01 14 26 03 19 04 37 05 05 05 44 09 40 14 06 19 12 9.5 1.8 18 1103 0314 48 WED APR 29 18 55 19 34 20 02 15 14 03 56 04 37 05 04 05 44 09 43 14 10 19 15 9.5 1.1 11 1149-0031 40 THU APR 30 18 55 19 35 20 02 16 02 04 33 04 36 05 03 05 43 09 48 14 14 19 18 9.5 0.5 5 1235-0418 34 ONE LINE REFERS TO EVENING DATE FULL MOON Apr 04 12:08 UT AND FOLLOWING MORNING. LAST QUARTER Apr 12 03:45 UT All dates and times are zone HST NEW MOON Apr 18 18:57 UT in upper table (except sid time). FIRST QUARTER Apr 25 23:56 UT